The clogging of riverbeds: A review of the physical processes

Dubuis, Romain; Cesare, Giovanni De

doi:10.1016/j.earscirev.2023.104374

Cited by 24 publications

(11 citation statements)

References 149 publications

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“…In such cases, deposition patterns and particle transport are also affected by other processes, such as armoring patterns and clogging process that fill large pores within bed sediments (Mooneyham & Strom, 2018; Shrivastava et al., 2021). Although generalizing the results of this study to different types of suspended and bed sediments is challenging, models are available for suspended particle transport and clogging in porous media (Dubuis & De Cesare, 2023; Herrero & Berni, 2016).…”

Section: Resultsmentioning

confidence: 99%

Kaolinite Deposition Dynamics and Streambed Clogging During Bedform Migration Under Losing and Gaining Flow Conditions

Shimony,

Teitelbaum,

Cifuentes

et al. 2023

Water Resources Research

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Clogging of streambeds due to clay deposition influences the stream‐subsurface exchange flux and thus directly modulates hyporheic ecological and biogeochemical processes. Clogging of sandy streambeds has previously been studied under losing and gaining flows and during streambed movement, but not when these two flow conditions coincided. We conducted flume experiments to quantify the combined effect of moving bedforms and losing or gaining flows on kaolinite deposition and streambed clogging. The experiments were conducted by adding pulses of kaolinite in a flume packed with sand under a stream water velocity of 25 cm/s. We measured the deposition rates, dynamics of hyporheic exchange flux (HEF) and vertical hydraulic conductivity (Kv), and the vertical distribution of kaolinite at the end of the experiments under two losing and two gaining flows (Darcy velocity of 10 and 20 cm/day). Kaolinite deposition led to clogging and reduction in Kv and HEF under all flow conditions. Deposition occurred faster under losing flow conditions than under gaining flow conditions. However, the changes in Kv and HEF were similar under losing and gaining flow conditions for similar kaolinite concentrations in the bed. Our results indicate that the deposition patterns of kaolinite were more influenced by bedform movement than by losing or gaining flow conditions, which is markedly different from the behavior observed under losing and gaining conditions for stationary bedforms. This implies that bedform morphodynamics control local‐scale clogging of sandy streambeds and should be accounted for when studying the hydrology of catchments at larger scales.

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Section: Resultsmentioning

confidence: 99%

Kaolinite Deposition Dynamics and Streambed Clogging During Bedform Migration Under Losing and Gaining Flow Conditions

Shimony,

Teitelbaum,

Cifuentes

et al. 2023

Water Resources Research

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“…Because the saturated percolation flow can be determined using Darcy's law, it is suggested that the difference between the observed river water levels and the groundwater levels at fixed observation points is proportional to the groundwater recharge. If turbid water upstream has accumulated fine-grained sand and clogs the riverbed pores (e.g., Goldschneider et al [21]; Lamontagne et al [22]; Dubuis and Cesare [23]), the recharge rate, that is, the relationship between the river water level and the groundwater level, is Ishikawa Prefecture maintains continuous groundwater monitoring within the fan, and data from groundwater level measurements at eight locations on both the right and left banks of the Tedori River (Kitaichi, Yasuyoshi, Suehiro, Taheiji, Akai, Izeki, Chiyononishi, and Fukumasu) were examined. Although different trends were observed for each monitoring well, the weighted average groundwater levels were calculated using the Thiessen method.…”

Section: Analysis Of Relationships Between River and Groundwater Levelsmentioning

confidence: 99%

Impacts of High-Concentration Turbid Water on the Groundwater Environment of the Tedori River Alluvial Fan in Japan

Fujihara,

Otani,

Takase

et al. 2024

Water

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The occurrence of high-concentration turbid water due to a large landslide in the upper reaches of the Tedori River Basin in Japan in May 2015 led to a rapid decline in the groundwater levels within the alluvial fan. However, factors other than turbid water, such as changes in precipitation patterns, can have a significant impact on groundwater levels but have not been thoroughly investigated. By analyzing the relationship between river water and groundwater levels, we found that by 2018, conditions had returned to those observed prior to the turbidity events. Regarding seepage, we found that approximately 24% of the Tedori River’s discharge contributed to seepage before the turbidity event. In contrast, during the post-turbidity years, seepage decreased between 2015 and 2017 and returned to the pre-turbidity levels by 2018. Furthermore, by constructing a hydrological model and examining the contributions of turbidity and precipitation, we found that in 2015, turbidity contributed to 76% of the groundwater level changes, whereas precipitation accounted for 24%. In contrast, in 2016, turbidity contributed to 67%, while precipitation contributed to 33%. In essence, the first year was characterized by a significant contribution from turbidity, while precipitation also played a significant role in groundwater level fluctuations in the second year.

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“…This process is called riverbed clogging or colmation, while the reverse process is called declogging (Figure 9 in Schwindt et al., 2023). Clogging reduces the pore space both at the surface (surface clogging) and deeper in the substrate (subsurface clogging, Dubuis & De Cesare, 2023). This leads to a decrease in permeability and hydraulic conductivity of the riverbed, which in turn alters the hyporheic exchange between the channel and subsurface (Kemp et al., 2011; Owens et al., 2005; Schälchli, 1992).…”

Section: Introductionmentioning

confidence: 99%

Flow and Turbulence Due To Wood Contribute to Declogging of Gravel Bed

Schalko,

Ponce,

Lassar

et al. 2024

Geophysical Research Letters

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The placement of wood in rivers is a common restoration method used to locally affect hydraulic and morphologic conditions to create habitat. Laboratory experiments demonstrated that wood placements can also promote surface declogging, that is, removal of fine sediment from a gravel bed, thereby restoring spawning grounds for fish. Logs of different size and submergence level were placed on a gravel bed clogged with fines. Surface declogging was observed in regions of elevated turbulence in the log wake and elevated velocity adjacent to the log. A criteria for declogging was identified based on a modified non‐dimensional Shields parameter combining mean and turbulent velocity at the bed. The footprint of declogged bed scaled with log dimensions. Emergent logs produced a larger declogging footprint compared to submerged logs of the same length, due to their stronger influence on the flow field. Logs were also shown to prevent clogging over similar areas.

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The clogging of riverbeds: A review of the physical processes

Cited by 24 publications

References 149 publications

Kaolinite Deposition Dynamics and Streambed Clogging During Bedform Migration Under Losing and Gaining Flow Conditions

Kaolinite Deposition Dynamics and Streambed Clogging During Bedform Migration Under Losing and Gaining Flow Conditions

Impacts of High-Concentration Turbid Water on the Groundwater Environment of the Tedori River Alluvial Fan in Japan

Flow and Turbulence Due To Wood Contribute to Declogging of Gravel Bed

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